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Sailboat Specifications

X 1 Ton

Fractional Sloop · Fin W/Spade Rudder

Designed by Niels Jeppesen · Built by X Yachts · First built 1986

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LOA 39.75 ft  ·  Beam 12.92 ft  ·  Displacement 13,200.00 lb  ·  Sail Area 818.00 ft²  ·  Fractional Sloop  ·  Fin W/Spade Rudder
About the X 1 Ton Sailboat

Originating from the Danish boatbuilder X-Yachts, the X 1 Ton represents an intriguing chapter in the competitive racing heritage that has come to define the brand's reputation. Designed to compete within the One Ton Cup rating class, this yacht emerged during an era when measurement rule racing was at the height of its popularity, producing a generation of fast, purpose-built hulls that pushed designers and sailors alike to their limits. As a One Ton class racer, the X 1 Ton was built with performance as its primary objective, making it well suited to inshore and offshore racing in the hands of an experienced crew. Its design would reflect the priorities of the rating rules of its time, likely featuring a fine hull form optimized for speed across a range of wind conditions. For the modern buyer, an X 1 Ton represents an opportunity to own a piece of competitive sailing history with genuine racing pedigree. While detailed specifications can be limited given the boat's age, prospective buyers are encouraged to research individual examples carefully and consult with experienced surveyors familiar with vintage racing yachts.

Dimensions & Specifications
LOA (Length Overall) 39.75 ft / 12.12 m
LWL (Waterline Length) 33.14 ft / 10.10 m
Beam 12.92 ft / 3.94 m
Max Draft 7.50 ft / 2.29 m
Displacement 13,200.00 lb / 5,987 kg
Sail Area (Reported) 818.00 ft² / 75.99 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Niels Jeppesen
Builder X Yachts
First Built 1986
Last Built 1989
Related Sailboats X 402 · J/39 · Contest 40S · Nordic 40 · X4
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Frequently Asked Questions

What is the X 1 Ton's sail area to displacement ratio?

The X 1 Ton has a Sail Area to Displacement ratio (SA/D) of 23.52. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the X 1 Ton's comfort ratio?

The X 1 Ton has a Ted Brewer Comfort Ratio of 19.23. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the X 1 Ton safe for offshore sailing?

The X 1 Ton has a Capsize Screening Formula value of 2.19. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the X 1 Ton?

The theoretical hull speed of the X 1 Ton is 7.71 knots, calculated from its waterline length.

How much does a X 1 Ton weigh?

The X 1 Ton has a displacement of 13,200.00 lb and a length overall (LOA) of 39.75 ft.

Who designed the X 1 Ton?

The X 1 Ton was designed by Niels Jeppesen, first built in 1986.